Would you tell me if the following way of presenting/writing both a countable and an uncountable noun in one sentence is OK or not? I think the first one is countable, whereas the second one is uncountable.

It is a good idea to avoid sending emails that coincide with the Monday afternoon rush and Friday afternoon lethargy.

Would you tell me if the following way of presenting/writing both a countable and an uncountable noun in one sentence is OK or not? I think the first one is countable, whereas the second one is uncountable.

It is a good idea to avoid sending emails that coincide with the Monday afternoon rush and Friday afternoon lethargy.

Thank you, Philip, but I haven't seen 'rush' being used as an uncountable noun. I looked at my dictionary pretty thoroughly and also thought about that deeply from my own experiences with the word. Is it an uncountable noun?

AnonymousThank you, Philip, but I haven't seen 'rush' being used as an uncountable noun. I looked at my dictionary pretty thoroughly and also thought about that deeply from my own experiences with the word. Is it an uncountable noun?

I wouldn't say "the rushes early in the mornings", but rather "the rush early in the mornings" - one rush per morning.